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Questions and Answers
What happens to the majority of droplet nuclei containing tubercle bacilli when inhaled?
What happens to the majority of droplet nuclei containing tubercle bacilli when inhaled?
- They remain in the respiratory system without causing harm
- They are immediately destroyed by the immune system
- They are trapped in the upper airways and expelled out by the ciliary action of the mucosal cells (correct)
- They travel directly to the lungs and infect the alveoli
What is the fate of the fraction of droplet nuclei containing tubercle bacilli that are not expelled by the ciliary action of the mucosal cells?
What is the fate of the fraction of droplet nuclei containing tubercle bacilli that are not expelled by the ciliary action of the mucosal cells?
- They are absorbed by the body and used for immune response
- They may reach the lungs and cause infection (correct)
- They are eliminated through sneezing and coughing
- They are neutralized by antibodies in the upper airways
What is the primary mechanism by which droplet nuclei containing tubercle bacilli are expelled from the respiratory system?
What is the primary mechanism by which droplet nuclei containing tubercle bacilli are expelled from the respiratory system?
- Immune system response
- Absorption by the lungs
- Sneezing and coughing
- Ciliary action of the mucosal cells (correct)
